Features: This product is crafted from ferromagnetic materials and have durability and stability. Crafted from ferromagnetic materials with precise engineered external gear rings for stable signal output and ABS system reliability. The external gear rings is precisely designed to ensures stable signal output in long-term use and effectively support the normal operation of ABS system. Ensures accurate wheel rotation detection during driving, critical for ABS activation in car across urban and highway conditions. Package includes 1 ABS tone rings designed for seamlessly installation, restoring factory functionality to your car wheel speed monitoring system. Specifications: Component:Metal Size: Approx.13.2x13.2x2cm/5.2x5.2x0.78inch Part Number:BK3Z-2C189-A For 150/250/350/350HD (2015-2024) Package Includes: 1pcs Wheel Speed Sensor Gear Rings note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.